id: 06021509 dt: j an: 2012b.00857 au: Álvarez García, José Luis; Losada, Rafael ti: Functions applets at the Gauss Project. (Los {\it applets} de funciones en el Proyecto Gauss.) so: Uno (Barc.) 17, No. 58, 25-37 (2011). py: 2011 pu: Graó Educación, Barcelona la: ES cc: I20 D30 U70 R20 R50 ut: new technologies; functions; Gauss Project; GeoGebra; geometry software; primary education; secondary education ci: li: ab: Summary: In this article we give several examples of how to make use of applets for mathematics teaching and learning in general and studying functions in particular. All the examples come from the Gauss Project at the Educational Technologies Institute, which makes them accessible to everyone interested. Each example includes a relevant aspect for working with applets, as well as some thoughts on their use. We stress the role of our own actions and the key support offered by constant feedback in a visual, dynamic and interactive setting. rv: